please i will appreciate a honest help on this problem. the working excel code, and comments and explanations. i beseach non expert not to waste my chances by answering wrongly or gambling the solution

Suppose you observe the following data from the CBOE .Price of Dec. 70 Call: $1.75 ($175 per contract) Price of Dec 65 Call: $3.00 ($300 per contract) You decide to buy the Dec 65 call and the Dec 70 Call. a) Use data tables to explore the payoff for different values of ST (b) Comment on the payoff at S$65, $70, $66, $67, $69 i.e. when does the strategy begin to return optimal profit (c) What is the name of this option strategy